<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html lang="en">
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <title>main.qml 示例文件| Qt Quick 5.11</title>
  <link rel="stylesheet" type="text/css" href="style/offline-simple.css" />
  <script type="text/javascript">
    document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css");
    // loading style sheet breaks anchors that were jumped to before
    // so force jumping to anchor again
    setTimeout(function() {
        var anchor = location.hash;
        // need to jump to different anchor first (e.g. none)
        location.hash = "#";
        setTimeout(function() {
            location.hash = anchor;
        }, 0);
    }, 0);
  </script>
</head>
<body>
<div class="header" id="qtdocheader">
  <div class="main">
    <div class="main-rounded">
      <div class="navigationbar">
        <table><tr>
<td ><a href="../qtdoc/index.html">Qt 5.11</a></td><td ><a href="qtquick-index.html">Qt Quick</a></td><td ><a href="qtquick-scenegraph-textureinsgnode-example.html">Scene Graph - Rendering FBOs</a></td><td >main.qml 示例文件</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right">Qt 5.11.1 参考指南</td>
        </tr></table>
      </div>
    </div>
<div class="content">
<div class="line">
<div class="content mainContent">
<div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div>
<h1 class="title">main.qml 示例文件</h1>
<span class="subtitle">scenegraph/textureinsgnode/main.qml</span>
<!-- $$$scenegraph/textureinsgnode/main.qml-description -->
<div class="descr"> <a name="details"></a>
<pre class="qml">

  <span class="comment">/****************************************************************************
  **
  ** Copyright (C) 2017 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the examples of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:BSD$
  ** Commercial License Usage
  ** Licensees holding valid commercial Qt licenses may use this file in
  ** accordance with the commercial license agreement provided with the
  ** Software or, alternatively, in accordance with the terms contained in
  ** a written agreement between you and The Qt Company. For licensing terms
  ** and conditions see https://www.qt.io/terms-conditions. For further
  ** information use the contact form at https://www.qt.io/contact-us.
  **
  ** BSD License Usage
  ** Alternatively, you may use this file under the terms of the BSD license
  ** as follows:
  **
  ** &quot;Redistribution and use in source and binary forms, with or without
  ** modification, are permitted provided that the following conditions are
  ** met:
  **   * Redistributions of source code must retain the above copyright
  **     notice, this list of conditions and the following disclaimer.
  **   * Redistributions in binary form must reproduce the above copyright
  **     notice, this list of conditions and the following disclaimer in
  **     the documentation and/or other materials provided with the
  **     distribution.
  **   * Neither the name of The Qt Company Ltd nor the names of its
  **     contributors may be used to endorse or promote products derived
  **     from this software without specific prior written permission.
  **
  **
  ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  ** &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.&quot;
  **
  ** $QT_END_LICENSE$
  **
  ****************************************************************************/</span>

  import QtQuick 2.0

  import SceneGraphRendering 1.0

  <span class="type"><a href="qml-qtquick-item.html">Item</a></span> {
      <span class="name">width</span>: <span class="number">400</span>
      <span class="name">height</span>: <span class="number">400</span>

      <span class="comment">// The checkers background</span>
      <span class="type"><a href="qml-qtquick-shadereffect.html">ShaderEffect</a></span> {
          <span class="name">id</span>: <span class="name">tileBackground</span>
          <span class="name">anchors</span>.fill: <span class="name">parent</span>

          property <span class="type"><a href="../qtqml/qml-real.html">real</a></span> <span class="name">tileSize</span>: <span class="number">16</span>
          property <span class="type"><a href="qml-color.html">color</a></span> <span class="name">color1</span>: <span class="name">Qt</span>.<span class="name">rgba</span>(<span class="number">0.9</span>, <span class="number">0.9</span>, <span class="number">0.9</span>, <span class="number">1</span>);
          property <span class="type"><a href="qml-color.html">color</a></span> <span class="name">color2</span>: <span class="name">Qt</span>.<span class="name">rgba</span>(<span class="number">0.85</span>, <span class="number">0.85</span>, <span class="number">0.85</span>, <span class="number">1</span>);

          property <span class="type"><a href="../qtqml/qml-size.html">size</a></span> <span class="name">pixelSize</span>: <span class="name">Qt</span>.<span class="name">size</span>(<span class="name">width</span> <span class="operator">/</span> <span class="name">tileSize</span>, <span class="name">height</span> <span class="operator">/</span> <span class="name">tileSize</span>);

          <span class="name">fragmentShader</span>:
              <span class="string">&quot;
              uniform lowp vec4 color1;
              uniform lowp vec4 color2;
              uniform highp vec2 pixelSize;
              varying highp vec2 qt_TexCoord0;
              void main() {
                  highp vec2 tc = sign(sin(3.14159265358979323846 * qt_TexCoord0 * pixelSize));
                  if (tc.x != tc.y)
                      gl_FragColor = color1;
                  else
                      gl_FragColor = color2;
              }
              &quot;</span>
      }

      <span class="type">Renderer</span> {
          <span class="name">id</span>: <span class="name">renderer</span>
          <span class="name">anchors</span>.fill: <span class="name">parent</span>
          <span class="name">anchors</span>.margins: <span class="number">10</span>

          <span class="comment">// The transform is just to show something interesting..</span>
          <span class="name">transform</span>: [
              <span class="type"><a href="qml-qtquick-rotation.html">Rotation</a></span> { <span class="name">id</span>: <span class="name">rotation</span>; <span class="name">axis</span>.x: <span class="number">0</span>; <span class="name">axis</span>.z: <span class="number">0</span>; <span class="name">axis</span>.y: <span class="number">1</span>; <span class="name">angle</span>: <span class="number">0</span>; <span class="name">origin</span>.x: <span class="name">renderer</span>.<span class="name">width</span> <span class="operator">/</span> <span class="number">2</span>; <span class="name">origin</span>.y: <span class="name">renderer</span>.<span class="name">height</span> <span class="operator">/</span> <span class="number">2</span>; },
              <span class="type"><a href="qml-qtquick-translate.html">Translate</a></span> { <span class="name">id</span>: <span class="name">txOut</span>; <span class="name">x</span>: -<span class="name">renderer</span>.<span class="name">width</span> <span class="operator">/</span> <span class="number">2</span>; <span class="name">y</span>: -<span class="name">renderer</span>.<span class="name">height</span> <span class="operator">/</span> <span class="number">2</span> },
              <span class="type"><a href="qml-qtquick-scale.html">Scale</a></span> { <span class="name">id</span>: <span class="name">scale</span>; },
              <span class="type"><a href="qml-qtquick-translate.html">Translate</a></span> { <span class="name">id</span>: <span class="name">txIn</span>; <span class="name">x</span>: <span class="name">renderer</span>.<span class="name">width</span> <span class="operator">/</span> <span class="number">2</span>; <span class="name">y</span>: <span class="name">renderer</span>.<span class="name">height</span> <span class="operator">/</span> <span class="number">2</span> }
          ]
      }

      <span class="comment">// Just to show something interesting</span>
      <span class="type"><a href="qml-qtquick-sequentialanimation.html">SequentialAnimation</a></span> {
          <span class="type"><a href="qml-qtquick-pauseanimation.html">PauseAnimation</a></span> { <span class="name">duration</span>: <span class="number">5000</span> }
          <span class="type"><a href="qml-qtquick-parallelanimation.html">ParallelAnimation</a></span> {
              <span class="type"><a href="qml-qtquick-numberanimation.html">NumberAnimation</a></span> { <span class="name">target</span>: <span class="name">scale</span>; <span class="name">property</span>: <span class="string">&quot;xScale&quot;</span>; <span class="name">to</span>: <span class="number">0.6</span>; <span class="name">duration</span>: <span class="number">1000</span>; <span class="name">easing</span>.type: <span class="name">Easing</span>.<span class="name">InOutBack</span> }
              <span class="type"><a href="qml-qtquick-numberanimation.html">NumberAnimation</a></span> { <span class="name">target</span>: <span class="name">scale</span>; <span class="name">property</span>: <span class="string">&quot;yScale&quot;</span>; <span class="name">to</span>: <span class="number">0.6</span>; <span class="name">duration</span>: <span class="number">1000</span>; <span class="name">easing</span>.type: <span class="name">Easing</span>.<span class="name">InOutBack</span> }
          }
          <span class="type"><a href="qml-qtquick-numberanimation.html">NumberAnimation</a></span> { <span class="name">target</span>: <span class="name">rotation</span>; <span class="name">property</span>: <span class="string">&quot;angle&quot;</span>; <span class="name">to</span>: <span class="number">80</span>; <span class="name">duration</span>: <span class="number">1000</span>; <span class="name">easing</span>.type: <span class="name">Easing</span>.<span class="name">InOutCubic</span> }
          <span class="type"><a href="qml-qtquick-numberanimation.html">NumberAnimation</a></span> { <span class="name">target</span>: <span class="name">rotation</span>; <span class="name">property</span>: <span class="string">&quot;angle&quot;</span>; <span class="name">to</span>: -<span class="number">80</span>; <span class="name">duration</span>: <span class="number">1000</span>; <span class="name">easing</span>.type: <span class="name">Easing</span>.<span class="name">InOutCubic</span> }
          <span class="type"><a href="qml-qtquick-numberanimation.html">NumberAnimation</a></span> { <span class="name">target</span>: <span class="name">rotation</span>; <span class="name">property</span>: <span class="string">&quot;angle&quot;</span>; <span class="name">to</span>: <span class="number">0</span>; <span class="name">duration</span>: <span class="number">1000</span>; <span class="name">easing</span>.type: <span class="name">Easing</span>.<span class="name">InOutCubic</span> }
          <span class="type"><a href="qml-qtquick-numberanimation.html">NumberAnimation</a></span> { <span class="name">target</span>: <span class="name">renderer</span>; <span class="name">property</span>: <span class="string">&quot;opacity&quot;</span>; <span class="name">to</span>: <span class="number">0.5</span>; <span class="name">duration</span>: <span class="number">1000</span>; <span class="name">easing</span>.type: <span class="name">Easing</span>.<span class="name">InOutCubic</span> }
          <span class="type"><a href="qml-qtquick-pauseanimation.html">PauseAnimation</a></span> { <span class="name">duration</span>: <span class="number">1000</span> }
          <span class="type"><a href="qml-qtquick-numberanimation.html">NumberAnimation</a></span> { <span class="name">target</span>: <span class="name">renderer</span>; <span class="name">property</span>: <span class="string">&quot;opacity&quot;</span>; <span class="name">to</span>: <span class="number">0.8</span>; <span class="name">duration</span>: <span class="number">1000</span>; <span class="name">easing</span>.type: <span class="name">Easing</span>.<span class="name">InOutCubic</span> }
          <span class="type"><a href="qml-qtquick-parallelanimation.html">ParallelAnimation</a></span> {
              <span class="type"><a href="qml-qtquick-numberanimation.html">NumberAnimation</a></span> { <span class="name">target</span>: <span class="name">scale</span>; <span class="name">property</span>: <span class="string">&quot;xScale&quot;</span>; <span class="name">to</span>: <span class="number">1</span>; <span class="name">duration</span>: <span class="number">1000</span>; <span class="name">easing</span>.type: <span class="name">Easing</span>.<span class="name">InOutBack</span> }
              <span class="type"><a href="qml-qtquick-numberanimation.html">NumberAnimation</a></span> { <span class="name">target</span>: <span class="name">scale</span>; <span class="name">property</span>: <span class="string">&quot;yScale&quot;</span>; <span class="name">to</span>: <span class="number">1</span>; <span class="name">duration</span>: <span class="number">1000</span>; <span class="name">easing</span>.type: <span class="name">Easing</span>.<span class="name">InOutBack</span> }
          }
          <span class="name">running</span>: <span class="number">true</span>
          <span class="name">loops</span>: <span class="name">Animation</span>.<span class="name">Infinite</span>
      }

      <span class="type"><a href="qml-qtquick-rectangle.html">Rectangle</a></span> {
          <span class="name">id</span>: <span class="name">labelFrame</span>
          <span class="name">anchors</span>.margins: -<span class="number">10</span>
          <span class="name">radius</span>: <span class="number">5</span>
          <span class="name">color</span>: <span class="string">&quot;white&quot;</span>
          <span class="name">border</span>.color: <span class="string">&quot;black&quot;</span>
          <span class="name">opacity</span>: <span class="number">0.8</span>
          <span class="name">anchors</span>.fill: <span class="name">label</span>
      }

      <span class="type"><a href="qml-qtquick-text.html">Text</a></span> {
          <span class="name">id</span>: <span class="name">label</span>
          <span class="name">anchors</span>.bottom: <span class="name">renderer</span>.<span class="name">bottom</span>
          <span class="name">anchors</span>.left: <span class="name">renderer</span>.<span class="name">left</span>
          <span class="name">anchors</span>.right: <span class="name">renderer</span>.<span class="name">right</span>
          <span class="name">anchors</span>.margins: <span class="number">20</span>
          <span class="name">wrapMode</span>: <span class="name">Text</span>.<span class="name">WordWrap</span>
          <span class="name">text</span>: <span class="string">&quot;The blue rectangle with the vintage 'Q' is an FBO, rendered by the application on the scene graph rendering thread. The FBO is managed and displayed using the QQuickFramebufferObject convenience class.&quot;</span>
      }

  }

</pre>
</div>
<!-- @@@scenegraph/textureinsgnode/main.qml -->
        </div>
       </div>
   </div>
   </div>
</div>
<div class="footer">
   <p>
   <acronym title="Copyright">&copy;</acronym> 2018 The Qt Company Ltd.
   Documentation contributions included herein are the copyrights of
   their respective owners.<br>    The documentation provided herein is licensed under the terms of the    <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation    License version 1.3</a> as published by the Free Software Foundation.<br>    Qt and respective logos are trademarks of The Qt Company Ltd.     in Finland and/or other countries worldwide. All other trademarks are property
   of their respective owners. </p>
</div>
</body>
</html>
